it remains unclear who was behind the attack in beng benghazi, who was involved. and whether they took advantage of an anti-is film, or used it as an excuse for the attack. susan rice had suggested the aeu attac attack was more spontaneous. but yesterday a spokesperson seemed reluctant to contradict the u.n. ambassador and offered little new information offering that an investigation is underway. >> the libyans are leading an investigation. we have our own f.b.i. investigation, we also have close f.b.i. and libyan cooperation as we both pursue these, but i'm not going to get into the back and forth of who is arrested, what we think, what we know about any of this. >> reporter: meanwhile reaction to this anti-is film is complicating the end game in afghanistan with attacks against nato troops there being blamed on the film. u.s. officials have suspended joint operations withafter beg with afghan prop patrols and that complicates with call by 2018. martha: it's difficult to get a handle on exactly what took place. a former c.i.a. covert operations officer joins us w